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Production process of plastic woven bag

A plastic woven bag, production process technology, applied in textiles and papermaking, single-component polyolefin rayon, fiber chemical characteristics, etc., can solve the problem of loss of transparency, loss of tensile strength, impact strength and resistance of woven bags Bending strength, easy aging and degradation of polypropylene materials, etc., to achieve the effect of inhibiting thermal oxygen aging degradation, improving color stability, and improving anti-oxidation efficiency

Inactive Publication Date: 2018-10-09
ZAOYANG DONGHANG WOVEN PRINTING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, polypropylene material is easy to age and degrade, lose its original transparency, and the surface turns yellow, fades, or even completely pulverizes
The damage of natural oxidation to polypropylene woven bags is considerable. It not only affects the appearance of woven bags, but also with the deepening of oxidation, woven bags will gradually lose their original tensile strength, impact strength and Bending strength, etc., gradually lose use value

Method used

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  • Production process of plastic woven bag
  • Production process of plastic woven bag

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A kind of production technology of plastic woven bag, comprises the following steps:

[0027] S1: Raw material blending and drying: first add 100g of hindered amine light stabilizer aqueous solution to 10kg of filler masterbatch powder, stir and dry to prepare treated filler masterbatch, mix 100kg of polypropylene granules, 20g of 1,1- Stilbene, 10g bis-octylamine, 5g aromatic phosphite, 0.02g hydroquinone, treated filler masterbatch, 100g 2,2'-methylene-bis(4,6-di-tert-butylphenyl ) Sodium Hydroxy Phosphate is put into a drying mixer and stirred, put into a drying mixer and stirred, the drying temperature is 80-100°C, and the drying time is 30-50 minutes;

[0028] S2: wire drawing process: after the blending and drying of step S1, the material enters the extruder, is heated by the barrel and sheared by the screw and the barrel, and is extruded into a film through a die. The heating temperature is 175°C , and then cooled by water at 30°C, cut into embryo silk with a bl...

Embodiment 2

[0034] A kind of production technology of plastic woven bag is characterized in that: comprises the following steps:

[0035] S1: Raw material blending and drying: first add 500g of hindered amine light stabilizer to form an aqueous solution into 15kg of filler masterbatch powder, stir and dry to prepare a treated filler masterbatch, mix 100kg of polypropylene granules, 50g of 1,1- Stilbene, 30g bis-octylamine, 10g aromatic phosphite, 0.05g hydroquinone, treated filler masterbatch, 200g 2,2'-methylene-bis(4,6-di-tert-butylphenyl ) hydroxyaluminum phosphate is put into a drying mixer and stirred, the drying temperature is 80-100°C, and the drying time is 30-50 minutes;

[0036] S2: wire drawing process: after the blending and drying of step S1, the material enters the extruder, is heated by the barrel and sheared by the screw and the barrel, and is formed and extruded into a film by the die head. The heating temperature is 185°C , and then cooled by water at 40°C, cut into emb...

Embodiment 3

[0042] A kind of production technology of plastic woven bag, comprises the following steps:

[0043]S1: Raw material blending and drying: first add 250g of hindered amine light stabilizer aqueous solution to 12.5kg of filler masterbatch powder, stir and dry to prepare treated filler masterbatch, mix 100kg of polypropylene granules, 30g1,1 - Stilbene, 20g bis-octylamine, 7g aromatic phosphite, 0.03g hydroquinone, treated filler masterbatch, 100g di-(p-methylbenzylidene) sorbitol are put into a drying mixer and stirred, and dried The temperature is 80-100°C, and the drying time is 30-50 minutes;

[0044] S2: wire drawing process: after the blending and drying of step S1, the material enters the extruder, is heated by the barrel and sheared by the screw and the barrel, and is extruded into a film through a die. The heating temperature is 180°C , and then cooled by water at 35°C, cut into embryo silk with a blade, and stretched through a drying plate to form a flat filament. . ...

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Abstract

The invention provides a production process of a plastic woven bag. The production process includes: S1, putting polypropylene granules, 1, 1-stilbene, dioctane amine, aromatic phosphite ester, filling masterbatch, light stabilizer, nucleating agent and hydroquinone into a drying stirrer, and stirring before drying; S2, enabling materials after going through the S1 to enter an extruder, extrudingto form a thin film through heating of a charging barrel, shearing by a screw and an extruder barrel and forming by a die head, performing water cooling, using a blade to cut the thin film into blankthreads, passing a drying plate to be stretched to form flat threads, performing thermal setting, and winding the threads to form a roll; S3, weaving the rolled flat threads into a cylindrical woven bag, and using a winding machine for winding; S4, printing trademarks and production comments; S5, using a cutter to cut into a woven bag; S6, sewing a bag opening to obtain the woven bag. By the production process, aging resistance and oxidation resistance of the plastic woven bag are improved, service life of the woven bag is prolonged, processing difficulty is reduced, and cost is saved.

Description

technical field [0001] The invention relates to the technical field of plastic woven bags, in particular to a production process of plastic woven bags. Background technique [0002] Plastic woven bags are made of polypropylene as the main raw material, which are extruded, drawn, and then weaved, woven, and bag-made. Polypropylene is a translucent, semi-crystalline thermoplastic with high strength, good insulation, low water absorption, high heat-forming temperature, low density, and high crystallinity. It is the main raw material for woven bags. However, polypropylene material is easy to age and degrade, lose its original transparency, and the surface turns yellow, fades, or even completely pulverizes. The damage of natural oxidation to polypropylene woven bags is considerable. It not only affects the appearance of woven bags, but also with the deepening of oxidation, woven bags will gradually lose their original tensile strength, impact strength and Bending strength, etc....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/46D01F1/10D01D5/42
CPCD01D5/426D01F1/10D01F6/46
Inventor 张爱军张峰
Owner ZAOYANG DONGHANG WOVEN PRINTING CO LTD
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